diff --git a/.eslintrc.cjs b/.eslintrc.cjs
index 442ae8f0..9f440e7b 100644
--- a/.eslintrc.cjs
+++ b/.eslintrc.cjs
@@ -32,6 +32,7 @@ module.exports = {
       },
       env: {
         es2020: true,
+        'shared-node-browser': true,
       },
       parserOptions: {
         ecmaVersion: 'latest',
diff --git a/gentest/gentest-driver.ts b/gentest/gentest-driver.ts
new file mode 100644
index 00000000..3cdab7e6
--- /dev/null
+++ b/gentest/gentest-driver.ts
@@ -0,0 +1,89 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+import * as fs from 'node:fs/promises';
+import {format} from 'node:util';
+import * as path from 'path';
+import * as process from 'node:process';
+import {Builder, logging} from 'selenium-webdriver';
+import {Options} from 'selenium-webdriver/chrome.js';
+
+await (async () => {
+  const options = new Options();
+  options.addArguments(
+    '--force-device-scale-factor=1',
+    '--window-position=0,0',
+    '--hide-scrollbars',
+  );
+  options.setLoggingPrefs({
+    browser: 'ALL',
+    performance: 'ALL',
+  });
+  const driver = await new Builder()
+    .forBrowser('chrome')
+    .setChromeOptions(options)
+    .build();
+
+  process.chdir(path.dirname(process.argv[1]));
+
+  const fixtures = await fs.readdir('./fixtures');
+  for (const fileName of fixtures) {
+    const fixture = await fs.readFile('fixtures/' + fileName, 'utf8');
+    const fileNameNoExtension = path.parse(fileName).name;
+    console.log('Generate', fileNameNoExtension);
+
+    // TODO: replace this with something more robust than just blindly replacing
+    // start/end in the entire fixture
+    const ltrFixture = fixture
+      .replaceAll('start', 'left')
+      .replaceAll('end', 'right')
+      .replaceAll('flex-left', 'flex-start')
+      .replaceAll('flex-right', 'flex-end');
+
+    const rtlFixture = fixture
+      .replaceAll('start', 'right')
+      .replaceAll('end', 'left')
+      .replaceAll('flex-right', 'flex-start')
+      .replaceAll('flex-left', 'flex-end');
+
+    const template = await fs.readFile('test-template.html', 'utf8');
+    const f = await fs.open('test.html', 'w');
+    await f.write(
+      format(template, fileNameNoExtension, ltrFixture, rtlFixture, fixture),
+    );
+    await f.close();
+
+    await driver.get('file://' + process.cwd() + '/test.html');
+    const logs = await driver.manage().logs().get(logging.Type.BROWSER);
+
+    await fs.writeFile(
+      `../tests/generated/${fileNameNoExtension}.cpp`,
+      eval(logs[0].message.replace(/^[^"]*/, '')),
+    );
+
+    await fs.writeFile(
+      `../java/tests/com/facebook/yoga/${fileNameNoExtension}.java`,
+      eval(logs[1].message.replace(/^[^"]*/, '')).replace(
+        'YogaTest',
+        fileNameNoExtension,
+      ),
+    );
+
+    await fs.writeFile(
+      `../javascript/tests/generated/${fileNameNoExtension}.test.ts`,
+      eval(logs[2].message.replace(/^[^"]*/, '')).replace(
+        'YogaTest',
+        fileNameNoExtension,
+      ),
+    );
+  }
+  await fs.unlink('test.html');
+  await driver.quit();
+})();
diff --git a/gentest/package.json b/gentest/package.json
new file mode 100644
index 00000000..b59cea82
--- /dev/null
+++ b/gentest/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "gentest",
+  "version": "0.0.0",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "type": "module",
+  "dependencies": {
+    "@types/node": "^20.10.3",
+    "@types/selenium-webdriver": "^4.1.21",
+    "babel-register-esm": "^1.2.5",
+    "selenium-webdriver": "^4.16.0"
+  }
+}
diff --git a/gentest/tsconfig.json b/gentest/tsconfig.json
new file mode 100644
index 00000000..88873fcb
--- /dev/null
+++ b/gentest/tsconfig.json
@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "target": "es2020",
+    "module": "nodenext",
+    "strict": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": false,
+    "moduleResolution": "nodenext",
+    "lib": [
+      "ES2021.String"
+    ]
+  },
+  "files": ["gentest-driver.ts"]
+}